Exam (elaborations)
KNES 456 Exam 1 questions with correct answers
- Course
- Knes
- Institution
- University Of Maryland - University College
KNES 456 Exam 1 questions with correct answers
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KNES 456 Exam 1 questions with correct answersHomeotherms Correct Answer-A warm blooded animal, maintains body
temp at constant levels usually above that of the environment by its
metabolic activity
Poikilotherm Correct Answer-Organism with a variable body temp. that
tends to fluctuate w/ a similar to or slightly higher than the temp of its
environment
Normal core body temperature Correct Answer-37 +/- 1 C
Hypothalamus Correct Answer-Where the "thermostats" resides in /
control the temperature
Preoptic Anterior Hypothalamus ( POAH ) Correct Answer-the are
where temperature is regulated
Posterior medial hypothalamus Correct Answer-For heat conservation ;
aka losing too much heat core temp is falling therefore we need to save
the heat for losing.
PILOERECTION Correct Answer-Involuntary bristling of hair due to a
sympathetic reflex usually triggered by cold, shock, or fright
Nociceptors Correct Answer-Sense pain
,Somatosensory Receptor Correct Answer-Relating to or denoting a
sensation that can occur anywhere in the boy, in contrast to one that is
localized to sense a organ.
What is heat? Correct Answer-Kinetic energy
Thermocouples Correct Answer-2 different metals
When you expose them to heat, creates a voltage. The greater the heat,
the greater the voltage
Thermistors Correct Answer-Single circuit element, when exposed,
changes resistance to electric flow
Adjustable set point Correct Answer-like a thermostat in your house
Reciprocal inhibition Correct Answer-When you exercise in cold
environments you can get "conflicting" signals from cold and warm
receptors. Cold from the environment and hot from the muscles from
exercising. Do you sweat and shiver at the same time?
NO!
One of those overpowers either cold or warm inhibits the other one. The
hypothalamus will then only initiate 1 response.
, Heat regulation Correct Answer-It's temperature is not the primary
defended variable. It's heat storage!
The body is constantly losing heat, so the heat regulation is trying to
"maintain" the status quo. Trying to match heat loss or heat gain.
Example: Run in the gym, room temperature, everything is fine in the
environment, etc. BUT as soon as you hop into the elliptical machine,
your heat production will be greater than heat loss! Therefore
temperature goes up - sweating is activated. Matching heat loss to heat
gain.
Adaptation Correct Answer-Changes in the human system ( muscular,
respiratory, etc ) induced by an exposure to an environmental stressor.
Habituation Correct Answer-Refers to a reduction in the behavioral
perception of a repeated stimulus "Not physiological/ it's perceptual"
Ex: professor coburn's wife moving to a colder environment/state
acclimation Correct Answer-physiological adaptation to repeated
environmental stresses occurring over relatively brief period of time
( days to weeks / short term )
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